yellow staining

Hello, Newly painted ceiling has caused this yellow spotting to come through the new paint in a small box back bedroom and on the landing ceiling. House is relatively old with the previous owners not doing much in terms of painting. After noticing the colour coming through, we have since...

Good evening, I’ve an attic room that’s got the chimneys coming up through it. The top plaster went flaky and started to go yellow. We had a damp company out they investigated and said it was condensation. My wife he attempted to fix the damaged area and it’s just starting cracking and...

When I retiled my bathroom, I used Mapei epoxy grout in a mid grey colour. At the bottom of the tiling up from the tray, some of the grout had a light yellow tinge to it. Does anyone know how to clean this? Is it possible to remove. All the tiles halfway up, to the ceiling are still the...